import string
s = input("请输入一个字符：") 
letters = 0 
space = 0 
digit = 0 
others = 0 
for c in s: 
    if c.isalpha(): 
        letters += 1
    elif c.isspace():
        space += 1
    elif c.isdigit():
        digit += 1
    else:
        others += 1
print('char =%d,space = %d,digit = %d,others = %d'%(letters,space,digit,others) ) 